AD 84-25-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 767-200 Series | BOEING Model 767 Airplanes |
| aircraft | The Boeing Company | 767-300 Series | BOEING Model 767 Airplanes |
| aircraft | The Boeing Company | 767-300F Series | BOEING Model 767 Airplanes |
Unsafe Condition
Freezing of the ram air turbine (RAT) actuator motors could prevent deployment of the RAT when required.
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Required Actions
Replace the RAT rotary actuator electric motor P/N S258T711-3 with P/N S258T711-4, operationally test the RAT deployment system per Boeing Service Bulletin 767-29-17, Revision 2 or later FAA-approved revision. Motors may be modified to -4 configuration via EEMCO Service Bulletin 5076-29-1, Revision 1 or later FAA-approved revision.
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Compliance Time
within 140 days after the effective date of this AD
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Affected Aircraft
Boeing Model 767-200 Series, 767-300 Series, 767-300F Series airplanes noted in the referenced Boeing Service Bulletin.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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